> Currently it's a usability nightmare and entirely unclear who can reach you and who cannot.
Yes! Exactly this. I had started working on a Prosody server side plugin that would route messages for Hangouts users through a Google Account if they were on Hangouts instead of old-Gtalk, but the details of detection seemed flaky at best. When I have some time, I'll give it another look by examining the User-Agent the client sends. I'm not hopeful, but I guess there's a chance.
Yes! Exactly this. I had started working on a Prosody server side plugin that would route messages for Hangouts users through a Google Account if they were on Hangouts instead of old-Gtalk, but the details of detection seemed flaky at best. When I have some time, I'll give it another look by examining the User-Agent the client sends. I'm not hopeful, but I guess there's a chance.